704. On the Former Extent of the Triassic Formation [October, 
take the present opportunity to briefly restate the substance of 
my former paper which seems to have been partially misunder- 
stood, together with a brief review of the evidence that has since 
been gathered. 
The broad generalization advanced in the essay mentioned 
above, was, that all the detached areas of Triassic rocks, from 
South Carolina northward to Connecticut and Massachusetts, are 
portions of one great estuary deposit, which has been broken up 
into separate areas by upheaval and denudation. The immediate 
aim of the paper, however, was to prove the former connection . 
of the Triassic rocks of New Jersey with those found in the Con- 
necticut valley. The conclusion arrived at from the study of the 
rocks of these two areas, was, that they are the marginal portions 
of an estuary deposit, the central region having been subsequently 
upheaved and greatly eroded. The Triassic rocks in this region 
thus fill a synclinal trough, the longer axis of which has been 
upheaved into a broad anticlinal. The facts that lead to this con- 
clusion may be briefly stated as follows: 
First. The Triassic rocks in New Jersey dip to the eer at 
an average angle of about fifteen degrees, while the correspond- 
ing beds along the Connecticut river are inclined to the eastward 
at a somewhat larger angle; thus suggesting that they are por- 
tions of one great anticlinal. 
Second. Each area is an-incomplete estuary formation, having 
only one line of shore deposits. This is shown in the case of the 
New Jersey area by the fact that all along the line of bluffs bor- 
dering the formation on the west occurs a coarse conglomerate 
which we have shown to bea shore deposit, derived from the 
bluffs of crystalline rock to the westward. In the finer sandstones 
and shales associated and interstratified with this conglomerate 
are ripple marks, sun cracks, raindrop impressions and the foot- 
prints of animals, proving beyond question that this was the 
shore of the basin in which the. Triassic rocks were deposited. 
Throughout the eastern margin of the New Jersey area, which is 
sharply defined along the western bank of the Hudson from Jer- 
sey City northward to Stony Point, these indications of shore 
conditions are entirely lacking, in their stead there are sand- 
stones, slates and shales of the character of ordinary off-shore 
deposits. The ae rock  Prming the Palisades will be noticed 
farther on, 
